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GrandRC . CanoMod . Futaba-RC

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Aerial Photography and Video > Need Help With Aerial Spherical Please
 
 
MPA
Elite Veteran
Location: Australia

Quote 
But do you have one of those flying under a heli.....

No..
Heli doesn't have a cam on anymore.
Could be used on a Heli with a few mods to the mounting but I only sell them with Pole systems at this stage.

www.polecam-systems.com
05-10-2008 05:44 AM
HOMEPAGE  
 
 
talk the torque
Senior Heliman
Location: SA

Quote 
full frame fisheye 10.5mm is what I have shot all my panos with.

Hi DJ What is the aprox lens angle, widthwards, in degrees. I'm trying to work out something thanx. +/- 110 degrees??

Quote 
Personally, I wouldn't use a circular fisheye. Less pixel density than a full frame fisheye.

Please explain the difference of a circular fisheye compared to a full frame fisheye

Thanks guys
05-13-2008 08:49 PM
 
 
AZ ChopperCam
Veteran
Location: Arizona

on my Nikon DSLR's the Nikkor 10.5mm lens is

100° horizontally
77° vertically
110° diagonally

for a primer on fisheye lenses and circular vs. full frame check this link

http://en.wikipedia.org/wiki/Fisheye_lens
05-13-2008 09:25 PM
HOMEPAGE  
 
 
talk the torque
Senior Heliman
Location: SA

Thanks again DJ
05-13-2008 10:51 PM
 
 
AirFoilAviation
Veteran
Location: Quincy, IL.

Testing the new Sigma 10mm full frame fisheye this weekend on the XSI Cannon.

We tested the system today as a one man operation. Worked great. Running 6 volts rotating in about 5 seconds with the 84 tooth gear.

The new design no longer rotates the mount just the camera. You will see more when the parts are machined.

We are going to go to 4 mounts in two weeks. The Mini Pro1/ The Pro1/ The Pro SP for pano's and sphere's and the GP-1.

Hoping to get the site up to date by then.

Give the XSI and 10mm Sigma a A+.

John

Team AirFoil
05-16-2008 08:43 PM
 
 
rerazor
Elite Veteran
Location: Mich.

So are the legs retractable on the Pro SP?
05-16-2008 09:08 PM
 
 
AirFoilAviation
Veteran
Location: Quincy, IL.

No we don't use retractable legs. I will post some pics with how the unit operates. Very light dedicated to 360 pano's or shpere's.

It's outside the box for guys that don't like changes in the looks of the heli landing gear for visibility but want 360 rotation.

John

Team AirFoil
05-16-2008 09:28 PM
 
 
rerazor
Elite Veteran
Location: Mich.

Camera raises and lowers.
05-16-2008 09:34 PM
 
 
tabbytabb
Elite Veteran
Location: seattle

I have got a new prototype that hangs from a rope. Once the camera gets spinning fast it works great.


Just have to set it down in the grass and it works great.


Tabb
05-16-2008 09:42 PM
HOMEPAGE  
 
 
rerazor
Elite Veteran
Location: Mich.

05-16-2008 09:45 PM
 
 
talk the torque
Senior Heliman
Location: SA

I have a wide angle lens which screws onto an extension and then onto my camera. At the moment the lens angle widthwards is about 90 degrees. It is just not enough to get from vertical and still get enough horizon when in portrait to do my panos. If I shorten the extension would that increas the angle more and would the camera still be able to focus?
05-23-2008 11:17 AM
 
 
BigguyOz
Key Veteran
Location: Sydney, New South Wales, Australia

No

Tony Stott
Scenefromabove.com.au
Trex 450,
8 & 11.5m mast
AP hot air balloon
AP kites
05-23-2008 03:08 PM
HOMEPAGE  
 
 
Hogster
Key Veteran
Location: Surrey, UK

ttt - what camera are you using at the moment? You can get different wide-angle lenses which give different fields-of-view .... but as Tony said, merely extending the extension tube will not help.

Cheers,


David
05-23-2008 03:10 PM
HOMEPAGE  
 
 
AZ ChopperCam
Veteran
Location: Arizona

90° is not bad. Just orient your camera in portrait mode and tilt your camera down about 20°. You'll capture more nadir and you can always put your own zenith in later.
05-23-2008 03:57 PM
HOMEPAGE  
 
 
talk the torque
Senior Heliman
Location: SA

Hey guys thanx

The closer I got the lens to my eye the wider the angle got, thats why I asked. So I did a test on the camera and it was opposite, the further it got the wider it got. I cant go much further and the black outer ring starts to show. Looking at the photos that I took on a tripod the angle may have increased to about 100 degrees. Focused fine in the house but not sure at distance yet.

Hogster I'm going to use my Fujifilm S7000, its an advanced camera but not an SLR.

I'm a little confused here DJ. First let me say that the 90 degrees angle is widthward so even in portrait mode i'm only going to get from vertical to a level horizon. Thinking that i will be getting 45 degrees from center each way, if I face the camera 20 degrees down the I'm not going to get the ground right below me. Should I then take a vertical downwards photo afterwards? I do understand that the sky will be put in afterwards. I hope that I making sense
05-23-2008 08:18 PM
 
 
AZ ChopperCam
Veteran
Location: Arizona

Quote 
Thinking that i will be getting 45 degrees from center each way, if I face the camera 20 degrees down the I'm not going to get the ground right below me. Should I then take a vertical downwards photo afterwards?

Yep! you are correct. This is a disadvantage to using a narrower field of view lens but with your lens it can be done. Just more difficult.
05-23-2008 08:22 PM
HOMEPAGE  
 
 
talk the torque
Senior Heliman
Location: SA

Ok got it. Thanks very much for your help DJ. You have been very decent & helpful.

Jason
05-24-2008 02:16 AM
 
 
CKY
Veteran
Location: Sunshine Coast, BC, Canada

My Canon 10-22 is 97x74 degree FOV (at 10mm). Very comparable to a fisheye. Nice part, you can goto 22mm for higher resolution with the same lens.

PTgui seems to convert all the frames to rectilinear anyways before processing, so what is the real advantage to a fisheye??

Other than a novelty look the fisheye can only be used for panos. The rectilinear can at least be used for very wide individual pano shots.

Chris

PS...if you cannot get the true 180 degree view, is the fisheye really worthwhile.
05-24-2008 08:56 AM
HOMEPAGE  
 
 
talk the torque
Senior Heliman
Location: SA

Hi DJ my camera when shootong in continueous mode only shoots at 3MP. Will 3MP images be enough for the sphericals? I would of thought that would be more than enough, unless they get used somewhere else besides on the web

Ok guys here is an out of the box question. What if I took 4 cheap P&S cameras with 3-5MP resolution. Fit them to a frame which holds them in portrait mode at 90 degrees apart facing 20 degrees down from the horizon. Lens angle would have to be like a 127x95 FOV if that is possible. They would all trigger at the same time and that would be your lower half spherical done
05-25-2008 01:36 AM
 
 
phil007
Senior Heliman
Location: Austin, Texas

Quote 
Ok guys here is an out of the box question. What if I took 4 cheap P&S cameras with 3-5MP resolution. Fit them to a frame which holds them in portrait mode at 90 degrees apart facing 20 degrees down from the horizon. Lens angle would have to be like a 127x95 FOV if that is possible. They would all trigger at the same time and that would be your lower half spherical done

That has been done with 4 DSLRs each with a Sigma 8mm lens. You just need to get the right wide angle lens for your P&S to do it.

Phil
05-25-2008 02:50 AM
HOMEPAGE  
 
 
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